主题：[求助]如何获得Graphics的宽度和高度？

Dim p As WinForm.Painter = e.Form.Controls("Painter1")
Dim g As Graphics = p.Graphics
Dim fnt As New Font("宋体",16)
Dim msg As String = "I Like Foxtable"
g.DrawString(msg,fnt,Brushes.Red,10,10)
p.Repaint()

只能获得p的宽度和高度，怎么获得g的宽度和高度?